The versatile formula provides good structural strength on a wide variety of substrates that include metals, ceramics, wood, and many plastics to offer a useful, effective bonding solution. This clear drying, general purpose epoxy starts with low viscosity for easy, controlled dispensing that helps achieve clean bond lines. 3M Scotch-Weld Epoxy Adhesive 105 provides relatively high elongation when cured, making very effective for bonding dissimilar surfaces such as glass to metal where differing coefficients of thermal expansion is a consideration. The mix ratio is 1:1 for quick, precise dispensing and with a four minute working time there s opportunity for repositioning to keep projects on track. The adhesive reaches handling strength in approximately 20 minutes and is fully cured in 48 hours (at 72°F/22°C). This adhesive can be dispensed in a variety of methods to accommodate the requirements of the user and the job.